Shock-absorber.



D. M. SHERMAN.

SHOCK ABSOBBBR.

APPLIOATION rILED 111111.24, 1914.

Patented Nov. 24, 1914 WIT/VESSEL? cylinder I is DAVID NORTON SHERMAN, 0F NEW' YORK, N. Y.

SHOCK-ABSOBBER.

Specification of Letters-latent.

Patented Nov. 24, 1914.

Application led March 24, 1914. Serial No. 826,844.

To all lwhom it may concern.'

Be it known that I, DAVID MoRroN SHER- MAN, a citizen of the United States, and a resident of the city of New York, borough of Manhattan, in the county and State of New York, have inventedja newand Improved Shock-Absorber, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved shock absorbermore especially designed for use on automobiles and similar vehicles and arranged to absorb the shocks both during the time the vehicle Wheel passes up on an obstruction on the roadway and down the same, thus insuring easy and comfortable riding of the occupants of the vehicle.

In order to accomplish the desired result, use is made of a. support mounted on the free end of the axle spring, a cylinder supported on the 4free end of the vehicle body spring and partly filled with a liquid, a plston movable in the said cylinder and connected with the said support, and a sp1-in interposed between the said cylinder an the said support. l

A practical embodiment of the invention is represented in the accompanying drawings forming a art of this specification, in which similar cl'laracters of reference indicate corresponding parts in all the views.

Figure 1 is a side elevation of the shock absorber as applied; Fig. 2 is an enlarged sectional side elevation of the shock absorber; Fig. 3 is a sectional plan view of the same on the line 3-3 of Fig. 2; and Fig. 4 is a sectional plan view of the same on the line 4--4 of F1 2.

The shock a sorber, presently described in detail, is interposed between the adjacent free ends of an axle spring A `and a body spring B of the automobile or other vehicle, as plainly shown in Fig. 1. For the purpxose mentioned the eye of the axle spring engages a bolt C held in a head D adjustabl attached to the upper ends of a series o vrods E rovided at their lower ends with a crosshear F to which is secured the lower end of a piston rod G carryinrlg a piston H reciprocating in a cylinder I. he provided at its upper end 4with a head I having parallel integral bars I2 supporting a bolt J engaged by an eye of the body spring B, as plainly shown in Fig. l. The cylinder I is partly filled with oil or other llquid K, and the piston H is pro- `vehicle wheel vided with openings H' extending from one face of the piston to the other face thereof so that the piston on reciprocating in the cylinder I causes the liquid K to fiow from one end of the cylinder to the other end thereof.

On the crosshead F rests the lower end of a coil spring L abutting with its upper end against the cylinder flange I3 to which the c linder head I is secured. The piston rod (Jr passes through a stuffing box I4 held on the lower end of the cylinder I to prevent leakage of the liquid K from the cylinder I. A casmg N is attached to the flange Is ofthe cylinder I and incloses the crosshead F, the spring L and the cylinder I together with the piston rod G, so that the several parts are protected against dust and other extraneous matter.

The operation is as follows: When the passes up on an obstruction in the roadway then the axle spring A lifts the head D,'rods E and crosshead F whereby the spring L is compressed and the piston H is caused to move upward in the cylinder I. B this arrangement the shock incident to t e wheel assing up on the obstruction is taken up lly the spring L, and when the wheel passes down the obstruction then the sprin L in expandin forces down the piston against the li uid in the lower end of the cylinder I. he liquid is slowly forced into the upper end of the cylinder I by way of the openings and hence the spring B is gradually compressed without the vehicle body an the occupants contained therein. It `is understood that when the iston H moves upward it lifts the liqui above it as the liquid only partly fills the cylinder I and the liquid K offers very little resistance to this upward movement of the piston H, but when the latter moves downward. the liquid in the lower portion of the cylinder I offers considerable resistance as the return flow of the liquid through the openings H is slow, as it moves against the liquid filling the lower portion of the cylinder.

From the foregoing it will be seen that the shock absorber is double-acting to relieve the body of the vehicle and the occupants of the shocks incident to the wheels of the vehicle passing over obstructions in the roadwa Although I have shown the shock abroducing a shock to sorber applied tothe axle spring A and the crosshead,v the said rods being adapted to body spring B in the form shown in Fig. be connected with yan axle spring of the l, it is evident that the shock absorber may vehicle, a coil spring interposed between be interposedbetween diderently arranged the said' crosshead and the said cylinder, 50

axle' springs A and body springs B without and a casing attached to thesaid cylinder deviating from the spirit of my invention. and inclosing the said crosshead and coil Having vthus described my invention, I spring.

claim as new and desire to secure by Let- 4. A shock absorber for vehicles compristers Patent: ing a solid cylinder head adapted to be con- 55y l. A shock absorber for vehicles comprisnected with the end of a body spring, a

ing a cylinder head adapted to be connected cylinder extending downwardly therefrom,

with the end of a body spring, a cylinder and having an opening through its lower extending downwardly "therefrom, a piston end, a piston contained and reciprocating reciprocating in said cylinder and a piston` wholly within said 'cylinder and a piston 60 rod extending to the outside of the cylinder rod extending to the outside of the cylinder in aldirection op ositely from the cylinder in a direction oppositely from the solid head, a cross hea attached to the outer end cylinder head, a cross head attached to the of the piston rod, connections between the outer end of the piston rod, connections becross head andthe axle spring of the Vetween the cross head and the aXlel spring 65 hicle and a coil spring interposed between at the vehicle and a coil spring interposed the said cross head and the cylinder and between the said cross head and the cylinabutting at its upper end the said cylinder der and abutting at its upper end the said head. cylinder head.

2. A shock absorber for vehicles, compris- 5. A shock absorber for vehicles compris- 7o ing a cylinder having a head adapted to ing a solid cylinder head adapted to be be connected with the end of a body spring connected with the end of a body spring, or' the vehicle, a piston reciprocating in a cylinder extending downwardly therethe said cylinder and having apiston rod from and containing a liquid, apiston proextending tothe outside of the said cylin- -vided with a passage therethrough con- 75 der, a crosshead attached to the outer end tained and reciprocating within said cylof the said piston rod, rods slidable in the inder and a piston rod extending downsaid cylinder head and attached to the said wardly from said piston, to the outside of crosshead, the said rods being adapted to the cylinder, a cross head attached to the be connected with an axle spring of the outer ends of the piston rod, connections 80 vehicle, and a coii spring interposed bebetween the crosshead and the axle spring tween the said crosshead and the said cylof.the vehicle, and a coil spring interposed inder. v `between the said cross head and the, cylinderV 3. A shock absorber for vehicles, comprisand abutting at its upper end thesaid- .cyling a cylinder having a head adapted to inder head. Y be connected with .the end or a body spring ln testimony whereof have signed my of the vehicle, a piston reciprocating in the naine to this speciiioation in the presencefof said cylinder and having a piston rod eX- two subscribing witnesses. v

tending to the outside'oi' the said cylinder, DAVID MORTON Sil-llllth/ii/rll.y a crosshead attached to the outer end of Witnesses: a the said piston rod, rods slidable in the saidv ELI DEIAMATER,

cylinder head and. attached to the said FRED Fms'r. 

